Hello. I have a problem with Time zone.
The server has the correct timezone and time set. (Wed Apr 25 11:01:56 CEST 2018)
The container has the correct timezone. (Wed Apr 25 11:02:20 CEST 2018)
Mysql displays the correct time in the terminal: mysql -e "SELECT NOW ();" (2018-04-25 11:02:38)

Problem: I create a calendar event today at 10:30 and I want to receive a notification 5 minutes before it starts. (10:25).
Remind me about an hour later (11:25)